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fix(langchain): Set agent name as gen_ai.agent.name#5877

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fix(langchain): Set agent name as gen_ai.agent.name#5877
alexander-alderman-webb wants to merge 7 commits intomasterfrom
webb/langchain/agent-name

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@alexander-alderman-webb alexander-alderman-webb commented Mar 26, 2026

Description

Set lc_agent_name as the gen_ai.agent.name attribute.

Remove manual accounting of the run_name attribute.

Issues

Reminders

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github-actions bot commented Mar 31, 2026

Semver Impact of This PR

🟢 Patch (bug fixes)

📋 Changelog Preview

This is how your changes will appear in the changelog.
Entries from this PR are highlighted with a left border (blockquote style).


New Features ✨

Langchain

  • Set gen_ai.operation.name and gen_ai.pipeline.name on LLM spans by ericapisani in #5849
  • Broaden AI provider detection beyond OpenAI and Anthropic by ericapisani in #5707
  • Update LLM span operation to gen_ai.generate_text by ericapisani in #5796

Other

Bug Fixes 🐛

Ci

  • Update validate-pr action to remove draft enforcement by stephanie-anderson in #5918
  • Use gh CLI to convert PR to draft by stephanie-anderson in #5874
  • Use GitHub App token for draft PR enforcement by stephanie-anderson in #5871

Openai

  • Only wrap types with _iterator for streamed responses by alexander-alderman-webb in #5917
  • Always set gen_ai.response.streaming for Responses by alexander-alderman-webb in #5697
  • Simplify Responses input handling by alexander-alderman-webb in #5695
  • Use max_output_tokens for Responses API by alexander-alderman-webb in #5693
  • Always set gen_ai.response.streaming for Completions by alexander-alderman-webb in #5692
  • Simplify Completions input handling by alexander-alderman-webb in #5690
  • Simplify embeddings input handling by alexander-alderman-webb in #5688

Other

  • (google-genai) Guard response extraction by alexander-alderman-webb in #5869
  • (langchain) Set agent name as gen_ai.agent.name by alexander-alderman-webb in #5877
  • (workflow) Fix permission issue with github app and PR draft graphql endpoint by Jeffreyhung in #5887
  • Add cycle detection to exceptions_from_error by ericapisani in #5880

Documentation 📚

  • Update CONTRIBUTING.md with contribution requirements and TOC by stephanie-anderson in #5896

Internal Changes 🔧

Ai

  • Remove unused GEN_AI_PIPELINE operation constant by ericapisani in #5886
  • Rename generate_text to text_completion by ericapisani in #5885

Langchain

  • Add text completion test by alexander-alderman-webb in #5740
  • Add tool execution test by alexander-alderman-webb in #5739
  • Add basic agent test with Responses call by alexander-alderman-webb in #5726
  • Replace mocks with httpx types by alexander-alderman-webb in #5724
  • Consolidate span origin assertion by alexander-alderman-webb in #5723
  • Consolidate available tools assertion by alexander-alderman-webb in #5721

Openai

  • Replace mocks with httpx types for streaming Responses by alexander-alderman-webb in #5882
  • Replace mocks with httpx types for streaming Completions by alexander-alderman-webb in #5879
  • Move input handling code into API-specific functions by alexander-alderman-webb in #5687

Other

  • (asyncpg) Normalize query whitespace in integration by ericapisani in #5855
  • 🤖 Update test matrix with new releases (03/30) by github-actions in #5912
  • Merge PR validation workflows and add reason-specific labels by stephanie-anderson in #5898
  • Add workflow to close unvetted non-maintainer PRs by stephanie-anderson in #5895
  • Exclude compromised litellm versions by alexander-alderman-webb in #5876
  • Reactivate litellm tests by alexander-alderman-webb in #5853
  • Add note to coordinate with assignee before PR submission by sentrivana in #5868
  • Temporarily stop running litellm tests by alexander-alderman-webb in #5851

Other

  • Update CHANGELOG.md by sentrivana in 97907852
  • release: 2.57.0 by sentrivana in 21f5dc35
  • ci+docs: Add draft PR enforcement by stephanie-anderson in #5867

🤖 This preview updates automatically when you update the PR.

@alexander-alderman-webb alexander-alderman-webb changed the title fix(langchain): Set agent name as gen_ai.agent.name fix(langchain): Set agent name as gen_ai.agent.name Mar 31, 2026
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github-actions bot commented Mar 31, 2026

Codecov Results 📊

134 passed | Total: 134 | Pass Rate: 100% | Execution Time: 20.77s

All tests are passing successfully.

❌ Patch coverage is 0.00%. Project has 13948 uncovered lines.

Files with missing lines (1)
File Patch % Lines
langchain.py 3.25% ⚠️ 566 Missing

Generated by Codecov Action

@alexander-alderman-webb alexander-alderman-webb marked this pull request as ready for review March 31, 2026 13:18
@alexander-alderman-webb alexander-alderman-webb requested a review from a team as a code owner March 31, 2026 13:18
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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Fix All in Cursor

Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.

set_data_normalized(
span,
SPANDATA.GEN_AI_REQUEST_MESSAGES,
messages_data,
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Agent name not set on span in stream path

Medium Severity

In _wrap_agent_executor_stream, the old code that set GEN_AI_AGENT_NAME on the span was removed along with the _push_agent call, but unlike _wrap_agent_executor_invoke (which preserved span.set_data(SPANDATA.GEN_AI_AGENT_NAME, run_name)), the stream path never sets the agent name on the agent span. This means streaming agent invocations will be missing the gen_ai.agent.name attribute on the top-level agent span.

Additional Locations (1)
Fix in Cursor Fix in Web

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I will follow up and set the pipeline case in this scenario

@alexander-alderman-webb alexander-alderman-webb marked this pull request as draft March 31, 2026 13:27
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